柴油发电机组管路系统装配平直牢固,倾斜度不大于()。连接处螺栓、螺母拧紧,无漏水、漏气、漏油现象。
A.0.1%
B.0.2%
C.0.3%
D.0.4%
参考答案:B
Isn't it time you got down to the papers?
A.mark
B.be marked
C.being marked
D.marking
制粉设备检修工作开始前应做好哪些安全措施?